Not the American market, but direct commentary from Diggory Hadoke on the market at issue:
"That was then, this is now.
Best hammer guns, strangely enough, are still holding their value quite well, despite a general downturn in prices for traditional British guns.
A few years ago, a good Westley Richards boxlock would command £4,500 retail. Today half that would be more likely. Bonham’s sold a pair of Woodward side-locks last month for £10,000. They were bought in a gun shop a decade ago for £25,000 by a friend of mine.
In a dead or declining market it is brave man who dips in and spends money on things rapidly going out of fashion. However, I’m going to tell you why now might be the right time to do just that."
https://www.vintageguns.co.uk/magazine/shifting-sands
